scholarly journals NON-FERMI-LIQUID BEHAVIOR FROM THE FERMI-LIQUID APPROACH

2007 ◽  
Vol 21 (13n14) ◽  
pp. 2077-2090 ◽  
Author(s):  
V. A. KHODEL ◽  
J. W. CLARK ◽  
H. LI ◽  
V. M. YAKOVENKO ◽  
M. V. ZVEREV
Keyword(s):  
Experimental Data ◽  
Fermi Liquid ◽  
General Framework ◽  
Landau Theory ◽  
Particle Spectrum ◽  
Strongly Correlated ◽  
Fermi Systems ◽  
Liquid Behavior ◽  
Theoretical Results ◽  
Fermi Liquid Behavior

Non-Fermi liquid behavior of strongly correlated Fermi systems is derived within the Landau approach. We attribute this behavior to a phase transition associated with a rearrangement of the Landau state that leads to flattening of a portion of the single-particle spectrum ∊(p) in the vicinity of the Fermi surface. We demonstrate that the quasiparticle subsystem responsible for the flat spectrum possesses the same thermodynamic properties as a gas of localized spins. Theoretical results compare favorably with available experimental data. While departing radically from prevalent views on the origin of non-Fermi-liquid behavior, the theory advanced here is nevertheless a conservative one of in continuing to operate within the general framework of Landau theory.

Asymmetric Tunneling Conductance and the Non-Fermi Liquid Behavior of Strongly Correlated Fermi Systems

JETP Letters ◽  
2018 ◽  
Vol 108 (5) ◽  
pp. 335-340 ◽  
Author(s):  
V. R. Shaginyan ◽  
A. Z. Msezane ◽  
G. S. Japaridze ◽  
V. A. Stephanovich ◽  
Y. S. Leevik
Keyword(s):  
Fermi Liquid ◽  
Tunneling Conductance ◽  
Strongly Correlated ◽  
Fermi Systems ◽  
Liquid Behavior ◽  
Fermi Liquid Behavior

Non-Fermi-liquid behavior of strongly correlated Fermi systems explained by the Fermi-liquid approach

2008 ◽  
Vol 403 (5-9) ◽  
pp. 1227-1229 ◽  
Author(s):  
V.A. Khodel ◽  
J.W. Clark ◽  
V.M. Yakovenko ◽  
M.V. Zverev
Keyword(s):  
Fermi Liquid ◽  
Strongly Correlated ◽  
Fermi Systems ◽  
Liquid Behavior ◽  
Fermi Liquid Behavior

scholarly journals Tuning bad metal and non-Fermi liquid behavior in a Mott material: Rare-earth nickelate thin films

2015 ◽  
Vol 1 (10) ◽  
pp. e1500797 ◽  
Author(s):  
Evgeny Mikheev ◽  
Adam J. Hauser ◽  
Burak Himmetoglu ◽  
Nelson E. Moreno ◽  
Anderson Janotti ◽  
...  
Keyword(s):  
Fermi Liquid ◽  
Epitaxial Films ◽  
Strongly Correlated ◽  
Complex Phase ◽  
Strongly Correlated Materials ◽  
Liquid Phases ◽  
Liquid Behavior ◽  
Novel Devices ◽  
Shed Light ◽  
Fermi Liquid Behavior

Resistances that exceed the Mott-Ioffe-Regel limit (known as bad metal behavior) and non-Fermi liquid behavior are ubiquitous features of the normal state of many strongly correlated materials. We establish the conditions that lead to bad metal and non-Fermi liquid phases in NdNiO3, which exhibits a prototype bandwidth-controlled metal-insulator transition. We show that resistance saturation is determined by the magnitude of Ni egorbital splitting, which can be tuned by strain in epitaxial films, causing the appearance of bad metal behavior under certain conditions. The results shed light on the nature of a crossover to a non-Fermi liquid metal phase and provide a predictive criterion for Anderson localization. They elucidate a seemingly complex phase behavior as a function of film strain and confinement and provide guidelines for orbital engineering and novel devices.

Non fermi liquid behavior in strongly correlated f-electron materials

1994 ◽  
Vol 95 (1-2) ◽  
pp. 225-243 ◽  
Author(s):  
M. B. Maple ◽  
C. L. Seaman ◽  
D. A. Gajewski ◽  
Y. Dalichaouch ◽  
V. B. Barbetta ◽  
...  
Keyword(s):  
Fermi Liquid ◽  
Strongly Correlated ◽  
Liquid Behavior ◽  
Fermi Liquid Behavior

scholarly journals Merging of single-particle levels and non-Fermi-liquid behavior of finite Fermi systems

2008 ◽  
Vol 403 (5-9) ◽  
pp. 1257-1259
Author(s):  
V.A. Khodel ◽  
J.W. Clark ◽  
Haochen Li ◽  
M.V. Zverev
Keyword(s):  
Single Particle ◽  
Fermi Liquid ◽  
Fermi Systems ◽  
Liquid Behavior ◽  
Fermi Liquid Behavior
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